newest Construction site Technical points for safety of temporary electricity
This document is the key technical points for safety of temporary power utilization on the construction site, including: content excerpts: prepare the technical scheme for safety of temporary power utilization and mark the layout plan of power utilization. The procedure of "preparation, review and approval" must be followed. The preparation shall be organized by electrical engineering technicians and reviewed by the technical director of the construction unit with legal qualification, It can be implemented only after being reported to the Chief Supervision Engineer for approval. When changing the temporary power scheme, relevant calculation sheets and drawings shall be updated in time. The temporary power project must be jointly accepted by the preparation, review and approval departments and the user, and can be put into use only after it is qualified. The rated leakage action current of the leakage protector in the main distribution box shall be greater than 30mA, and the rated leakage action time shall be greater than 0.1S, but the product shall not be greater than 30mA · S. The electrical appliances, specifications and parameters in the distribution box match the capacity of the equipment, and are fastened on the electrical mounting plate according to the specified position. The fuse has a reliable arc extinguishing subsection function? The rated leakage action current of the leakage protector in the switch box shall not be greater than 30mA, the rated leakage action time shall not be greater than 0.1S, and the rated leakage action current under humid and corrosive environment shall not be greater than 15mA. The electrical box shall be properly placed, and there shall be no sundries around. The electrician's contact number and inspection records shall be marked.
